Question: Which lake has the largest length?
Paraphrase: What is the longest lake?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q23397 . ?ent wdt:P2043 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: Casa de Piedra Dam, Lago Steffen, Departure Lake, Ukai Dam, Müggelsee